Valve-grinding tool.



J. W. LARNED.

VALVE GRINDING TOOL. APPLICATION FILED FEB. 7. 1912.

Jim/EM f'ar A 7' far/4E5 Patented Nov. 27/, 1917.

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il'OlEihT W. EARNED, 0F BROOKLYN, GUNNEC'IICUT.

VALVE-GRINDING TQQL.

Specification of Letters Patent.

Patented Nov. at. rei

Application filed. February 7,1917. Serial N o. 14?,i03.

To all whom it may concern:

Be it known that I, JOHN W. Leanne, a citizen of the United States, residing at Brooklyn, in the county of Windham and State of Connecticut, have invented certain new and useful Improvements in Valve- Grinding Tools, of which the following is a specification.

This invention relates to what I shall for convenience term'a valve grinding tool. As will be inferred, while the article is primarily intended for use in the particular noted, it is conceivable that it may in whole or part be used with equal advantage inother connections. The primary object of the invention is the provision of an article of the character set forth by which several difierent types of valves can be readily and easily turned during grindlng. The invention involves other features of novelty and advantage which with the foregoing will be stated at length in the following description wherein I will outline in detail that one of the several forms'of embodiment of the invention which I have selected for illustration in the drawings accompanying and forming part of the present specification. I am in no sense restricted to this exact disclosure; I may depart therefrom in several respects within the scope of the invention defined by the claims following said description.

Referring to said drawings:

Figure l is an elevation of a tool involving the invention, one of the portions thereof being shown as longitudinally adjusted by dotted lines.

Fig. 2 is a longitudinal central sectional view of the same.

Fig. 3 is an elevation of the parts se arated fromeach other, the view being ta en from the side at practically ninety degrees from Fig. l.

Fig. 4 is a detail view on an enlarged scale of the tool portion, showing two of the positions thereof by full and dotted lines respectively.

Figs. 5 and 6 are transverse sections on the lines 55 and 66 respectively of Fig. 1, looking in the direction of the arrows.

Like characters refer to like parts throughout the several views which are on different scales.

The device comprises in its make-up (see Figs. land 2) a shank, that denoted in a general way by 2 answering sat1sfactorily in rated from each as to maintain a this connection. This shank as will hereinafter appear is longitudinally adjustable. It may as shown consist of the tubular portion 3 which slidingly receives the rod or equivalent 4, the parts being shown as sepaother in Fig. 3. The shank 2 is equipped with a handle as 5 which in the'present case is rigid with the shank element 3, the former surrounding the latter and being made rigid therewith in any convenient manner. The handle and the other parts in fact may be of any suitable material; for instance the handle could be of wood, the part 3 of metal tubing and the part 4 generally of solid stock. The tubular part 3 slidingly receives the rod element 4 as shown best in Fig. 2. The two parts, however, are capable'of telescopic adjustment as shown for example by dotted lines in Fig. 1, wherein the part 4 which directly carries the tool portion in the construction shown is illustrated by dotted lines as partially drawn forward from within the tubular portion 3. As shown the tubular part 3 has several slots 6 extending backward from its front end to produce several fingers 7, the slotted portion of the tube 3 being externally threaded as at 8 to receive the nut 9, the threaded portion 8 being tapered in a forward direction, so that when the nut 9 is turned backward the fingers 6 will be con stricted on or caused to bind the rod 4 so predetermined adjustment of the latter. By running ed the nut 9, the rod 4 can be freely moved forward and at times backward, to adjust the same, and when theadjustment is obtained the nut 9 is turned on-to cause the fingers 7 to bind on the rod 4 and thus maintain the adjunment. This is a convenient type of telescopic shank. It may be in some cases that no such longitudinal adjustment is present, or if it be present a means difierent from that already described will be provided to maintain the same.

The tool portion of the implement is shown in detail and on rather a large scale in Fig. 4, being denoted in a general way by 10. It consists of two portions 11 and 12 of practically duplicate character, pivoted to eachv other as at 13, the front end of the rod portion 4 of the shank 2 having an elongated slot 14 to receive the parts li and 12, the pivot 13 extending through the branches of the fork made by the slot 14. Said slot Ill) is made 'sufliciently long to provide for the reversal of the elements '11 and 12. Said elements 11 and 12 are bowed longitudinally, the pivot 13 extending through them. The elements 11 and 12 at one end are inset as at 15, the inset portions 15 being adapted to abut and to he in the same plane so as to present jointly a driving portion as shown best in Fig. 1. The bowed portions 11 and 12 are provided at their outer ends with projections 16 which can be adjusted toward and from each other and which when the adjustment is obtained are adapted to enter perforations in a valve. The adjustments in question may be maintained in any desirable manner, for example by a nut as 17 fitted on what is shown as the upper threaded end of the pivot or screw 13 and which is adapted in order to secure the function set forth to engage against the forked front portion of the rod 4:. By loosening the nut 17 the elements 11 and 12 can be adjusted toward or from each other to vary the distance between the projections or stud portions 16 onto swing them back and bring the driver portion of the tool to the front, the driver portion of the tool consisting of the abutting projections 15. In Fig. 4- I have not represented the maximum span of.

the projection .16,,because the projections 15 can be overlapped, and in this way the distance between the projections 16 can be made greater than'that shown in Fig. 4.

In Fig. 1 the portions 15 are shown as being at the front and asabutting so as to present jointly a driver which can be inserted into the slot of a valve to oscillate said valve as will hereinafter appear. In Fig. 2 the projections 16 of the tool portion are shown as at the front, so that these projections can be entered into the sockets of a difierent type of valve, In the latter. case the valve will be oscillated in like fashion. 7

At the present time there are in use two different styles of valves. One of these types of valves has a slot and the abutting portions 15 when in the relation shown in Fig. 1 can be inserted in-this slot and the valve thus oscillated. The other type of valve has two openings at opposite sides of its center, and in Fig. 2 the projections 16 are shown as forward, and maintained in fixed relation with each other by the setting up of the nut 17 to be introduced into the necessary sockets of the valve which is to be ground. This valve will be oscillated in similar fashion.

As already observed, the handle 5 presents a main handle, the auxiliary handle-being denoted by 17'. handle is shown as spherical, this may not always be necessary, although the sha e is a good one. Said auxiliary handle 17 like the main handle 5 may be made of wood. In the present case it has a ivotal connection with the main handle, an a means by which this Although this auxiliary result can be obtained will be hereinafter set forth. Said auxiliary handle is bored partly through to tightly. receive the sleeve 19 and through this sleeve is driven the pin 20, the forward headed end 21 of which overlies the outer end of the sleeve 19. This pin is also driven into the tube 3, which it will be seen extends slightly beyond the rear endof the handle 5 as illustrated in Figs. 1, 2 and 3. The handle 17 can, therefore, turn with respect to the handle 5.

In action either the inset portions 15 will be in abutment as shown in Fig. 1 or the projections 16 will be forward as illustrated in Fig. 2. In this event the proper part of the tool will be introduced into the valve, and the valve will be oscillated by fitting the handle 17 in the hollow of a hand and then applying a rolling action to the handle 5,

which turns with the shank 2 and the tool portion 11 so as to effect the oscillation of the valve, the handle 17 at this time being non-rotary.

It will be assumed that a valve is to be ground. This valve may be either of the types already-identified, and the tool portion 11 will be adjusted to adapt it for use with the particular typeof valve at which point the necessary part of the tool portion will be inserted in the opening of the valve and the latter then oscillated in the manner already set forth, the necessary grinding material having already been placed on the 'valve.

In certain types of automobiles and especially those employing a large number of cylinders, it is practically impossible to reach the valves of the innermost cylinders with the usual implements, and in this connection the present tool is particularly useful, because its shank can beplaced against the dash of the car and the handles 5 and 6 can be disposed outside of the dash, so that they can be reached to effect the oscillation of the shank 2 in the manner already dehollow of one hand and the first handle being adapted to be oscillated by the other hand to thus oscillate the shank and the tool connected therewith.

2. A tool of the class described comprising a shank, a handle to rotate with the shank, the shank havin a rearward extension, and

a spherical han le pivotally connected with 1 0 meat-iv the rearward extension, the forward end of the shank being provided with a tool portion.

-3. A tool of the class described comprising a tubular straight shank portion provided with a handle rigid with the rear part thereof, a straight rod lslidable in said tubular portion, means for maintaining the rod and tubular portion in adjusted relation, and tool means carried by the rod..

A. A tool of the class described comprising a tubular shank portion provided with a handle rigid therewith, a rod slidable in said tubular portion, means for maintaining the rod and tubular portion in adjusted relation, tool means carried by the rod, and a handle pivotally connected with the other handle for movement about the axis of said tubular portion.

5. A tool of the class described comprising a tubular shank portion havin a handle rigid therewith, a pin rigid with and extending from the rear portion of the tubular shank portion, a handle having a sleeve to ivotally receive said tubular portion, the ront end of the tubular portion being externally threaded and slotted back from its lar portion,

front end to produce a plurality of fingers, a rod slidable in said tubular portion, a nut on the threaded portion, and valve engaging means carried by the rod. v 6. A tool comprising a shank, and a tool portion comprising two pivoted'cross levers, supported by the shank, the levers at one end cooperating to present a screw driver, the

opposite end of the levers tions. v

7. A tool of the class described comprising a tubular shank portion having a handle rotative therewith, the front end of the tubular portion being externally threaded and slotted back from its front end to produce a plurality of fingers, a rod slidable in said tubua nut on the threaded portion which when advanced is adapted to constrict the threaded portion around the rod, and valve engaging means carried by the rod.

In testimony whereof I afix my signature in the presence of two witnesses.

JOHN W. LARNED. Witnesses:

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